diff --git a/testgres/node.py b/testgres/node.py
index 77538896..6d67d2cf 100644
--- a/testgres/node.py
+++ b/testgres/node.py
@@ -812,7 +812,8 @@ def psql(self,
filename=None,
dbname=None,
username=None,
- input=None):
+ input=None,
+ **variables):
"""
Execute a query using psql.
@@ -822,9 +823,18 @@ def psql(self,
dbname: database name to connect to.
username: database user name.
input: raw input to be passed.
+ **variables: vars to be set before execution.
Returns:
A tuple of (code, stdout, stderr).
+
+ Examples:
+ >>> psql('select 1')
+ (0, b'1\n', b'')
+ >>> psql('postgres', 'select 2')
+ (0, b'2\n', b'')
+ >>> psql(query='select 3', ON_ERROR_STOP=1)
+ (0, b'3\n', b'')
"""
# Set default arguments
@@ -843,6 +853,10 @@ def psql(self,
dbname
] # yapf: disable
+ # set variables before execution
+ for key, value in iteritems(variables):
+ psql_params.extend(["--set", '{}={}'.format(key, value)])
+
# select query source
if query:
psql_params.extend(("-c", query))
@@ -874,10 +888,15 @@ def safe_psql(self, query=None, **kwargs):
username: database user name.
input: raw input to be passed.
+ **kwargs are passed to psql().
+
Returns:
psql's output as str.
"""
+ # force this setting
+ kwargs['ON_ERROR_STOP'] = 1
+
ret, out, err = self.psql(query=query, **kwargs)
if ret:
raise QueryException((err or b'').decode('utf-8'), query)
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